Radiotherapy Applicator Pad with Segmented Seed Channels
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Solution Overview
Problem
Conventional radiotherapy treatments for skin cancer are costly and complex, requiring expensive equipment and shielding, and may not provide nuanced radiation exposure, posing challenges for both patients and providers, especially in resource-limited settings.
Innovation Solution
A radiotherapy applicator system comprising a flexible applicator pad with spaced channels for catheter sleeves and elongate seed lines with radioactive seeds arranged in a predetermined pattern, along with shielding to protect staff and minimize radiation exposure to healthy tissue, offering a cost-effective and customizable treatment option.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional radiotherapy treatment using linear accelerator and collimator is used, then radiation treatment effectiveness is improved, but treatment cost and device complexity increase significantly
Solution Approach 1:
The patent divides the radiation delivery system into separate modular components: an applicator pad with channels for individual catheter sleeves, each containing seed lines with radioactive seeds. This segmentation allows the system to be customized for different treatment areas without requiring a complete expensive LINAC system, reducing overall device complexity while maintaining treatment effectiveness.
Solution Approach 2:
The patent employs disposable catheter sleeves and seed lines that can be discarded after use, eliminating the need for expensive, complex, and costly-to-maintain equipment like LINACs. This approach reduces device complexity and operational costs while providing effective radiation delivery for the treatment duration.
2Reliability
If conventional radiotherapy equipment is used, then radiation treatment capability is improved, but treatment cost increases significantly
Solution Approach 1:
The patent utilizes inexpensive disposable components including the applicator pad, catheter sleeves, and seed lines. These low-cost single-use items eliminate the need for expensive capital equipment investment and reduce operational costs, making radiation treatment accessible while maintaining therapeutic capability.
Solution Approach 2:
The patent extracts the essential radiation delivery function from the complex LINAC system and implements it through simplified components: radioactive seeds delivered via catheter sleeves through an applicator pad. This extraction of the core function removes the need for expensive supporting equipment while preserving treatment capability.
3Reliability
If standard radiation therapy is applied, then tumor treatment effectiveness is improved, but radiation exposure to healthy tissue increases
Solution Approach 1:
The patent applies radiation locally through an applicator pad with channels positioned directly over the target area. Individual catheter sleeves deliver radioactive seeds to specific locations within the pad, enabling precise localization of radiation delivery to the tumor site while minimizing exposure to surrounding healthy tissue.
Solution Approach 2:
The radiation delivery is segmented into multiple discrete catheter sleeves and seed lines that can be independently positioned and activated. This segmentation allows selective application of radiation only to the tumor area, avoiding unnecessary exposure of healthy surrounding tissues while maintaining effective tumor treatment.
4Object-affected harmful factors
If comprehensive shielding is implemented, then staff protection from radiation is improved, but device complexity and cost increase
Solution Approach 1:
The patent employs simple, inexpensive disposable components rather than complex permanent shielding infrastructure. The applicator pad and catheter sleeves are designed for single use, eliminating the need for expensive, complex, and space-consuming permanent radiation shielding facilities while still protecting staff through controlled application and disposal protocols.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system provides a cost-effective, gentle, and targeted radiation therapy for skin cancer, minimizing exposure to healthy tissue and allowing for multiple sessions, making it suitable for resource-constrained environments while maintaining effectiveness.
Implementation Method 1
Each seed line contains one or more radioactive seeds and spacers arranged in a predetermined pattern along the length of the seed line
Data Source
AI summary
The radiotherapy applicator system includes an applicator pad adapted to cover a target area of a patient for radiation treatment. One or more spaced channels extend through a length of the applicator pad. Each channel receives a catheter sleeve, and an elongate seed line is selectively inserted into a corresponding catheter sleeve. Each seed line contains one or more radioactive seeds and spacers arranged in a predetermined pattern along the length of the seed line. The seed lines within the applicator pad form an array of a predetermined, geometric treatment pattern of seeds covering the target area, the treatment pattern predetermined from a treatment plan for that target area and the patient. Shielding is provided to protect staff administering the treatment and non-target areas from harmful levels of radiation exposure. The radiotherapy applicator system is reusable for multi-session treatment and may be provided as a customized kit.